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Historical patents

Technological Inventions 1850 - 1899

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Shelfmark:: 39/000159

granted on:: 1889-02-18

Title:: Instrument zum Messen elektrischer Ströme

Inventor:: Douglas, William Henry

Key:: 1889/001579

Place of publication:: Stourbridge

Country:: United Kingdom of Great Britain and Northern Ireland

Class:: 21 - Elektrische Apparate, Telegraphie und Telephonie

Collection:: General

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